2531 Cat Pump Triplex Positive Displacement Plunger Pump 25 GPM 1200 PSI 316 Stainless Steel

Cat Pumps 2531 Triplex Plunger Pump

The Cat Pumps 2531 is an industrial-duty, 25-frame positive displacement triplex plunger pump engineered for high-capacity, continuous-duty liquid transfer and high-pressure system operations. Constructed with precision-machined 316 stainless steel manifolds and 316 stainless steel valve assemblies, this pump offers exceptional corrosion resistance, making it an ideal choice for pumping demanding liquids such as reverse osmosis (RO) water, deionized (DI) water, salt water, and chemical solutions. The wet-end features highly polished, solid ceramic plungers that provide a true wear surface to minimize friction and significantly extend seal life in rigorous commercial and industrial environments.

Designed for robust performance and low-pulsation flow, the 2531 model delivers a maximum flow rate of 25 gallons per minute (GPM) while operating at up to 1,200 PSI. Driven at an optimal speed of 1025 RPM, it features a heavy-duty, die-cast aluminum crankcase with splash oil lubrication to ensure maximum load capacity and bearing life. The pump comes standard with NBR (Buna-N) seals and O-rings, allowing it to safely handle liquid temperatures up to 160°F (71°C). Its durable construction and versatile drive options—including belt or clutch drive configurations—make it a reliable, high-efficiency solution for multi-nozzle systems, process water distribution, and agricultural injection setups.